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H. PI-EROE'& J. B. BUTTON.

OIL TANK.

Patented Jan. 22

e @nitrh tetra glam; @gffi HIRAM PIER-CE AND J. B. BUTTON, "0F CLEVELAND, OHIO.

Letters Patent No. 61,453, dated January 22, i8c7.- I

I IMPROVEMENT IN OIL/ZTANKS.

, TO ALL WHOM IT MAY CONCERN: D V Be it known that we, H. Pmnon and .J. B. BUTTON, of Cleveland, in the county of- Cuyahoga, and State of Ohio, have invented certain new and useful improvements in Oil Tanks; and we do hereby declare that'th e following is a full and complete description of the same, reference being hadtto the accompanying drawings, making a part of this specification, in which- Figure 1' is a top View of the'tank.

Figure 2, a transverse section Figures 3 and 4, detachedsections to be referred to hereafter.

Like letters of reference refer to like parts in the views. r

A, fig. '1, represcnts the ground upon which the sills or sleepers 13B are laid inthe order and inthe direction as shown in fig. 3, the number and lei i gth. of which being according to the size or capacity of the tank desired. In order to bracethe sills and to assist in keeping them in 'proper position, the keys C are introduced between them. A detached key is shown in 4-. It will be seen by this that the key is made with inclined 'ends, hence making the upper side much narrower than the lower. The sides of v the sills betweenwhich the keys are placed are gained in so as to conform to the shape of the key. This gain is shown at D, fig. .2. .These 'severalbraces, when in position, collectively'form an are or circle, as shown in fig. 3.- In the extreme ends of the sills are cut the gains E E, fig. 3, in which are fitted the abutment braces F, fig. 2. These braces project above the face of the sills,.for min'g' a shoulder, against which the first flooring, G, of the tank is made to abut, as shown in fig. 2. The relative position of theplank to the hills, upon 'which they are laid andfirmly spiked, and which form the first floor o1? the tank, as aforesaid, is indicated bythe dotted lines a,' fig. 3'. In this it -will be seen that the shim ends of! the 'planks rest upon .the sills, and this being thc'weaker part of the plank it is thereby securely and firnily supported. H, fig. 1,, is the body of the tank, and -is ccnstrpcted in sections of sheet iron, firmlyriveted together and seamed, the height of the tank being more or less, as circumstances may'require. The tank is placed upon the floor, so that it will rest upon or over th'e'arch made by the keys above referred to. A gasket is then placed under it and it is then secured in position upon the floor by the angle-ironsb, figs. 1 and 2, which are riveted to the sides of the tank and fastened to the fioor' 3y strong bolts being screwed through them down into the sills and keys. When the tank has been thus properly secured to the floor, the joints of the same are then calked and painted over with coal tar or any other desirablesubstance. Upon this islald an inlayer of 'felting, a, and j'niade to fit-closely to the sides of the'tank. Upon this felting is then laid and spiked a second bottom or floor of-plank,'G', inside the .tank, and .in direction trans versely to the first, so that the'ends of which will lap over uponthe shim ends'of the first floor. It is'obvions that'by placing the planks thus'transvcrscly to each other that th'weak sides of the one will be supported and strengthened by the stronger parts of the other, thereby making the entire bottom of greater strength and durability... The second bottom is not made to fit close to the sides oi the ta nk,but' a short space is left between the edge of v the floor and the side of the tank for'the. purpose of calking, as also are the seams of thejuside bottom. 1 Should the timber, be toosliort to form an entire sill for the tank,jtwo'. pieces. are their scaved and locked'tog' ethe-r, as shown'iatc, fig. 2. By this means the sillis made as strong as if made of one piece of timber.

Of the many advantages of a tank constructed as above described,'we instance the followingas the leading points of interest: The sills being gained out atthe ends, as above described, thereby support the arch F, against which the first floor is made to abut, offers astrong resistanceto the outward pressure of the floor while being calked, and also to the lateral pressure of thc tank when'filled with oil. The sills beinglspliccd and locked together in the manner, stated gives-to them the character-of an entire piece of timbhnand hence much greater security is therebygiven to the foundation or floor of the tank. Also, the "sections G which form the inner arch of the floor,.by their peculiar wedging shape, serve to give additional strength to the sills by bracing them laterally, when the sections are drawn upward by the. screws passing through the angle-irons; and by the means of which the tank isscrewed to the floor. In placing tiefi'rst floor diagonally across the sills, so thatthe shim ends of which shall rest upon them, and at the same time abutting-against the outer arch, secures the floor from all possibility of giving way by any ordinary circumstances. Also by placing the plank of the second floor diagonally across the joints of the first, or so that the ends of the plank comprising the secondfloor shall lap upon the shim enrlsof the first floor, as above stated. It slso'being placed within the tank and supported laterally by the angle-irons and bolts, gives to the whole structure a, solidity and strengthof characteras to admit of no possibility of its being displa'eed by the act of ealking the seams of the floor. This; together with the spiking of the floor to the sills and to each other, with the intrpose or inlayer of felting;- reudersthe whole strhcture of the bottom complete without the possibility of leakage of: being in any way displaced by the weight and pressure of the oil.

-What I claimas 'myinvention, and desire to secure by Letters Patent, is- I -1. The arrangemeutof the sills 13, keys Cyubutmerit braces F, in combination with the foundation floor G, forthe purpose set forth. Q

2'. The construction'iand arrangement of the bottom G plsced wi thin the tank; the inlayer' d, in .combinetion with the tank H, angle-irons b, and floor G', for the purpose and in the malnner set forth. f/

I I I i I J. 'B. BUTTON, Witnesses: HIRAM PIERCE.

J; H. Buimmes, Y E. E. Winn. 

